Has anyone had a geothermal system put in to their house to cool or heat it? If so, How big? How much energy do you save over what you had?
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I installed a two-stage 4 ton geothermal system about 6 years ago. I don't plan on ever owning a home without it.
*edit* don, I see you're also in PA. Did you install your kit before the state incentives ran out? Do you feel you'll recoup even after rebates?
We are doing the consult as I write this. Any problems with the HOAs?
Don, any recommendations on installers?
I have 2 vertical bore holes, 300m deep each. They feed the "heat source" side of two Vaillant heat pumps. The base of the calculation for this type of installation in Switzerland is to assume about 50W per m of heat exchange tubing underground. So if you need 30kW peak, you will install 600m of tubing to exchange heat. Vertical bore holes are nowadays the most common type of installation. Horizontal registers cool down your garden and not everybody has enough room. The costs of operation (electricity) are about 3-4 times lower than what I paid or might pay now for gas. Linear payback will depend on oil price (gas is tied to that) and will be about 5-10 years. Tax concessions and support from the local electricity board assisted. Heat pumps of this type are by now very common in Switzerland. I heard that they command currently a dominant share of new installations. To cool your house as well would be possible, but is not common. We do not have more than a few weeks with 30°C (86°F) or more each year and that you can survive without cooling.Has anyone had a geothermal system put in to their house to cool or heat it? If so, How big? How much energy do you save over what you had?